References
- [1] Chatalov, G., Geologia na Strandzhanskata zona v Bulgaria, S., Izd. BAN, 1990, 263 s.
- [2] Galabov, Zh. (red.), Il. Ivanov, P. Penchev, K. Mishev, V. Nedelcheva. Fizicheska geografia na Bulgaria. Narodna prosveta, Sofia, 1956, 344.
- [3] Kanev, D. Morfostrukturni zoni i oblasti v Bulgaria. God. Sof. u-tet, 1977, 69, 2, Sofia.
- [4] Kanev, D., Geomorfologia na Bulgaria. Univ. izd. “Kliment Ohridski”, Sofia, 1989, 322.
- [5] Tsankov, Ts., Kr. Stoyanov. Otnosno geomorfolozhkoto rayonirane na Bulgaria. Sbornik dokladi, Izd. Sayuz na uchenite - St. Zagora, t. 4, 2003, 50-54.
- [6] Katzkov, N., Stoychev, D., Antova, N., Decheva, A., Yovchev, S.,Kuleva, S., Spiridonova, M., Stoyanov, Ts., Filipov, L., Filipova, L. The cosmophototectonic map of Bulgaria. - Geologica Balcanica, 15, 1, 1985, 3-10.
- [7] Tzankov, Tz., C. Burchfiel, L. Royden. Neotectonic (Quaternary) map of Bulgaria - scale 1:500000. NSBN 954 -01 - X. Publishing House Grafica - 19, Sofia, 1998.
- [8] Tzankov, Tz., C. Burchfiel, L. Royden. Explanatory Note to the Neotectonic (Quaternary) map of Bulgaria - scale 1:500000. NSBN 954 -01 - X. Publishing House Grafica-19, Sofia, 1998а, 12.
- [9] Yaranoff, D. La Neotectonique de la Bulgarie. Revue de Geographie phisique et de Geologie dynamique, 5, 2, Paris, 1963, 75-83.
- [10] http://www.noaa.gov/
- [11] https://www.iris.edu/hq/